From Nookipedia, the Animal Crossing wiki
Jay (ツバクロ, Tsubakuro) is a jock, bird villager in the Animal Crossing series. His English name is derived from the species of bird, although there are no jays that have red heads like the villager. His Japanese name, is the katakana writing of 燕 (Tsubakuro), which is the Japanese word for "Swallow" (the species of bird). Also, his forked tail, red head, blue body, and white belly also suggests a barn swallow. His Japanese name is also derived from "comfort" or "enjoy".
Jay is a bird villager, with blue, red, and white feathers and an orange beak and feet, and is similar to a swallow. He initially wears the Six Ball Shirt. He is resembles Robin, another bird villager.
Below is a brief description of the jock personality. For more information, click here.
Jay has a jock personality, which means he will have a keen interest in sport and fitness, making him appear competitive and in some cases rude when talking to other villagers, usually criticizing their fitness. He will appear slow-witted and absent-minded when talking about deep, meaningful things. He will get along well with peppy villagers, but get confused by the choice of lifestyle followed by lazy villagers, who appear opposite to the jock personality. He may offend and upset snooty and cranky villagers. He is not very talkative, and is known to say he wishes he could talk to someone else the second time a player ever talks to him. He usually asks for fossils.
Jay's house has a classical theme, with "K.K. Waltz" playing on his gramophone. In Animal Crossing, Jay has the Perfect Painting in his house. As shown on the side, Jay likes to collect instruments. Jay's carpet is the classic carpet and his wallpaper is the ornate wallpaper. Jay has many violins and a piano. The Perfect Painting and the instruments are left out in the later games.
Names in other languages